Touch control structure, display panel, and display apparatus

ABSTRACT

A touch control structure is provided. The touch control structure includes a plurality of first touch electrodes arranged in a plurality of rows and a plurality of second touch electrodes arranged in a plurality of columns, forming a plurality of bridge intersections and a plurality of non-bridge intersections. The touch control structure at a respective one of the plurality of bridge intersections includes a respective one of a plurality of first bridges connecting two adjacent first touch electrode blocks in a respective row and a respective one of a plurality of second bridges connecting two adjacent second touch electrode blocks in a respective column. The touch control structure at a respective one of the plurality of non-bridge intersections includes a respective one of a plurality of intersection fill patterns spaced apart from the first touch electrode blocks and the second touch electrode blocks.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a continuation of U.S. application Ser. No.17/299,299, filed Aug. 6, 2020, which is a national stage applicationunder 35 U.S.C. § 371 of International Application No.PCT/CN2020/107293, filed Aug. 6, 2020. Each of the forgoing applicationsis herein incorporated by reference in its entirety for all purposes.

TECHNICAL FIELD

The present invention relates to display technology, more particularly,to a touch control structure, a display panel, and a display apparatus.

BACKGROUND

Various types of touch panels have been developed. Examples of touchpanels include one-glass-solution (OGS) touch panels, on-cell touchpanels, and in-cell touch panels. The on-cell touch panels provide hightouch control accuracy. The on-cell touch panels can be classified intosingle-layer-on-cell (SLOC) touch panels and multi-layer-on-cell (MLOC)touch panels. In particular, multiple point touch control can beachieved in the MLOC touch panels with superior touch control accuracyand blanking effects.

SUMMARY

In one aspect, the present disclosure provides a touch controlstructure, comprising a plurality of first touch electrodes arranged ina plurality of rows and a plurality of second touch electrodes arrangedin a plurality of columns; first touch electrode blocks of the pluralityof rows and second touch electrode blocks of the plurality of columnsare respectively arranged in interlaced matrices, forming a plurality ofbridge intersections and a plurality of non-bridge intersections; thetouch control structure at a respective one of the plurality of bridgeintersections comprises a respective one of a plurality of first bridgesconnecting two adjacent first touch electrode blocks in a respective rowand a respective one of a plurality of second bridges connecting twoadjacent second touch electrode blocks in a respective column; and thetouch control structure at a respective one of the plurality ofnon-bridge intersections comprises a respective one of a plurality ofintersection fill patterns spaced apart from the first touch electrodeblocks and the second touch electrode blocks; wherein the respective oneof the plurality of intersection fill patterns is in a space surroundedby a first portion, a second portion, a third portion, and a fourthportion; the first portion and the second portion are respectively fromthe first touch electrode blocks respectively from two adjacent rows ofthe plurality of rows; the third portion and the fourth portion arerespectively from the two second touch electrode blocks respectivelyfrom two adjacent columns of the plurality of columns; an entirety of aperiphery of the respective one of the plurality of intersection fillpatterns is surrounded by respective portions of a first side of thefirst portion, a second side of the second portion, a third side of thethird portion, and a fourth side of a fourth portion; and the firsttouch electrode blocks, the second touch electrode blocks, and theplurality of intersection fill patterns are in a same layer and made ofa same material.

Optionally, the respective one of the plurality of intersection fillpatterns is in a space surrounded by two first touch electrode blocksrespectively from two adjacent rows of the plurality of rows and twosecond touch electrode blocks respectively from two adjacent columns ofthe plurality of columns.

Optionally, the two first touch electrode blocks respectively from thetwo adjacent rows are spaced apart from each other by the respective oneof the plurality of intersection fill patterns; and the two second touchelectrode blocks respectively from the two adjacent columns are spacedapart from each other by the respective one of the plurality ofintersection fill patterns.

Optionally, a first virtual center line of the two first touch electrodeblocks respectively from the two adjacent rows crosses over therespective one of the plurality of intersection fill patterns; and asecond virtual center line of the two second touch electrode blocksrespectively from the two adjacent columns of the plurality of columnscrosses over the respective one of the plurality of intersection fillpatterns.

Optionally, the first portion is respectively spaced apart from thesecond portion, the third portion, and the fourth portion by therespective one of the plurality of intersection fill patterns; thesecond portion is respectively spaced apart from the first portion, thethird portion, and the fourth portion by the respective one of theplurality of intersection fill patterns; the third portion isrespectively spaced apart from the first portion, the second portion,and the fourth portion by the respective one of the plurality ofintersection fill patterns; and the fourth portion is respectivelyspaced apart from the first portion, the second portion, and the thirdportion by the respective one of the plurality of intersection fillpatterns.

Optionally, the first side and the second side are substantiallyparallel to each other; and the third side and the fourth side aresubstantially parallel to each other.

Optionally, electrode blocks of the plurality of first touch electrodesand the plurality of second touch electrodes are respectively meshelectrode blocks; the plurality of intersection fill patterns are meshpatterns; a respective first electrode block and a respective secondelectrode block adjacent to each other are insulated from each other byline breaks in mesh lines of the mesh electrode blocks; the first side,the second side, the third side, and the fourth side, are respectivelyformed by virtually connected line breaks respectively of the firstportion, the second portion, the third portion, and the fourth portion;the periphery of the respective one of the plurality of intersectionfill patterns is insulated from the first portion, the second portion,the third portion, and the fourth portion by line breaks in the meshlines of the mesh patterns; and the periphery of the respective one ofthe plurality of intersection fill patterns is formed by the line breaksin the mesh lines of the mesh patterns.

Optionally, each of the first portion, the second portion, the thirdportion, and the fourth portion comprises a respective protrusionadjacent to the respective one of the plurality of intersection fillpatterns; wherein the respective protrusion comprises a first branch anda second branch; the first branch extends along a first direction; thesecond branch extends along a second direction; and the first directionand the second direction are substantially perpendicular to each other.

Optionally, a respective second block of the second touch electrodeblocks comprises two second bridge protrusions along a column directionand two second non-bridge protrusions along a row direction; the twosecond bridge protrusions are respectively connected to two adjacentsecond touch electrode blocks respectively through two adjacent bridgeintersections of the plurality of bridge intersections along the columndirection; and the two second non-bridge protrusions are respectivelydirectly adjacent to two adjacent fill patterns of the plurality ofintersection fill patterns respectively at two adjacent non-bridgeintersections of the plurality of non-bridge intersections along the rowdirection.

Optionally, a ratio between a first total surface area of the pluralityof intersection fill patterns and a second total combined surface areaof the first touch electrode blocks, the second touch electrode blocks,and the plurality of intersection fill patterns is greater than zero andno more than 1%.

Optionally, the touch control structure further comprises a plurality oftouch electrode bridges and an insulating layer between the plurality oftouch electrode bridges, and the electrode blocks of the plurality offirst touch electrodes and the plurality of second touch electrodes;wherein the plurality of touch electrode bridges respectively extendthrough vias in the insulating layer to respectively connect adjacentsecond electrode blocks in a respective column of the plurality ofcolumns of the plurality of second touch electrodes.

Optionally, the touch control structure further comprises a plurality ofinternal fill patterns respectively surrounded by electrode blocks ofthe plurality of second touch electrodes; wherein the plurality ofinternal fill patterns are absent in the plurality of first touchelectrodes.

In another aspect, the present disclosure provides a display apparatus,comprising the display panel described herein or fabricated by a methoddescribed herein, and an integrated circuit connected to the displaypanel.

In another aspect, the present disclosure provides a touch controlstructure, comprising a plurality of first touch electrodes arranged ina plurality of rows and a plurality of second touch electrodes arrangedin a plurality of columns; first touch electrode blocks of the pluralityof rows and second touch electrode blocks of the plurality of columnsare respectively arranged in interlaced matrices, forming a plurality ofbridge intersections and a plurality of non-bridge intersections; thetouch control structure at a respective one of the plurality of bridgeintersections comprises a respective one of a plurality of first bridgesconnecting two adjacent first touch electrode blocks in a respective rowand a respective one of a plurality of second bridges connecting twoadjacent second touch electrode blocks in a respective column; and thetouch control structure at a respective one of the plurality ofnon-bridge intersections comprises a respective one of a plurality ofintersection fill patterns spaced apart from the first touch electrodeblocks and the second touch electrode blocks.

Optionally, the respective one of the plurality of intersection fillpatterns is in a space surrounded by two first touch electrode blocksrespectively from two adjacent rows of the plurality of rows and twosecond touch electrode blocks respectively from two adjacent columns ofthe plurality of columns.

Optionally, the two first touch electrode blocks respectively from thetwo adjacent rows are spaced apart from each other by the respective oneof the plurality of intersection fill patterns; and the two second touchelectrode blocks respectively from the two adjacent columns are spacedapart from each other by the respective one of the plurality ofintersection fill patterns.

Optionally, a first virtual center line of the two first touch electrodeblocks respectively from the two adjacent rows crosses over therespective one of the plurality of intersection fill patterns; and asecond virtual center line of the two second touch electrode blocksrespectively from the two adjacent columns of the plurality of columnscrosses over the respective one of the plurality of intersection fillpatterns.

Optionally, the respective one of the plurality of intersection fillpatterns is in a space surrounded by a first portion, a second portion,a third portion, and a fourth portion; the first portion and the secondportion are respectively from the first touch electrode blocksrespectively from two adjacent rows of the plurality of rows; the thirdportion and the fourth portion are respectively from the two secondtouch electrode blocks respectively from two adjacent columns of theplurality of columns; the first portion is respectively spaced apartfrom the second portion, the third portion, and the fourth portion bythe respective one of the plurality of intersection fill patterns; thesecond portion is respectively spaced apart from the first portion, thethird portion, and the fourth portion by the respective one of theplurality of intersection fill patterns; the third portion isrespectively spaced apart from the first portion, the second portion,and the fourth portion by the respective one of the plurality ofintersection fill patterns; and the fourth portion is respectivelyspaced apart from the first portion, the second portion, and the thirdportion by the respective one of the plurality of intersection fillpatterns.

Optionally, an entirety of a periphery of the respective one of theplurality of intersection fill patterns is surrounded by respectiveportions of a first side of the first portion, a second side of thesecond portion, a third side of the third portion, and a fourth side ofa fourth portion; the first side and the second side are substantiallyparallel to each other; and the third side and the fourth side aresubstantially parallel to each other.

Optionally, electrode blocks of the plurality of first touch electrodesand the plurality of second touch electrodes are respectively meshelectrode blocks; the plurality of intersection fill patterns are meshpatterns; a respective first electrode block and a respective secondelectrode block adjacent to each other are insulated from each other byline breaks in mesh lines of the mesh electrode blocks; the first side,the second side, the third side, and the fourth side, are respectivelyformed by virtually connected line breaks respectively of the firstportion, the second portion, the third portion, and the fourth portion;the periphery of the respective one of the plurality of intersectionfill patterns is insulated from the first portion, the second portion,the third portion, and the fourth portion by line breaks in the meshlines of the mesh patterns; and the periphery of the respective one ofthe plurality of intersection fill patterns is formed by the line breaksin the mesh lines of the mesh patterns.

Optionally, each of the first portion, the second portion, the thirdportion, and the fourth portion comprises a respective protrusiondirectly adjacent to the respective one of the plurality of intersectionfill patterns.

Optionally, the respective protrusion comprises a first branch and asecond branch; the first branch extends along a first direction; thesecond branch extends along a second direction; and the first directionand the second direction are substantially perpendicular to each other.

Optionally, a respective first block of the first touch electrode blockscomprises two first bridge protrusions along a row direction and twofirst non-bridge protrusions along a column direction; the two firstbridge protrusions are respectively connected to two adjacent firsttouch electrode blocks respectively through two adjacent bridgeintersections of the plurality of bridge intersections along the rowdirection; and the two first non-bridge protrusions are respectivelydirectly adjacent to two adjacent fill patterns of the plurality ofintersection fill patterns respectively at two adjacent non-bridgeintersections of the plurality of non-bridge intersections along thecolumn direction.

Optionally, electrode blocks of the plurality of first touch electrodesand the plurality of second touch electrodes are respectively meshelectrode blocks; fill patterns of the plurality of intersection fillpatterns are mesh patterns; the electrode blocks of the plurality offirst touch electrodes and the plurality of second touch electrodes, andthe plurality of intersection fill patterns, are formed from a meshlayer; the touch control structure comprises gaps to respectively spaceapart the electrode blocks of the plurality of first touch electrodesand the plurality of second touch electrodes, and the plurality ofintersection fill patterns; non-bridge protrusion and fill pattern thatare directly adjacent to each other are insulated from each other by agap having a gap width in a range of 1 μm to 10 μm; and the mesh layerhas a mesh line width in a range of 1 μm to 5 μm.

Optionally, the two first non-bridge protrusions are at least partiallytruncated compared with the two first bridge protrusions.

Optionally, each of the two first bridge protrusions has a first numberof branches; each of the two first non-bridge protrusions has a secondnumber of branches; and the first number equals to the second number.

Optionally, each of the two first non-bridge protrusions comprises twobranches; a first respective one of the plurality of intersection fillpatterns is directly adjacent to two branches of a first respective oneof the two first non-bridge protrusions; and a second respective one ofthe plurality of intersection fill patterns is directly adjacent to twobranches of a second respective one of the two first non-bridgeprotrusions.

Optionally, a respective second block of the second touch electrodeblocks comprises two second bridge protrusions along a column directionand two second non-bridge protrusions along a row direction; the twosecond bridge protrusions are respectively connected to two adjacentsecond touch electrode blocks respectively through two adjacent bridgeintersections of the plurality of bridge intersections along the columndirection; and the two second non-bridge protrusions are respectivelydirectly adjacent to two adjacent fill patterns of the plurality ofintersection fill patterns respectively at two adjacent non-bridgeintersections of the plurality of non-bridge intersections along the rowdirection.

Optionally, the two second non-bridge protrusions are substantiallyintact compared with the two second bridge protrusions.

Optionally, the two second non-bridge protrusions are at least partiallytruncated compared with the two second bridge protrusions.

Optionally, each of the two second bridge protrusions has a third numberof branches; each of the two second non-bridge protrusions has a fourthnumber of branches; and the third number equals to the fourth number.

Optionally, each of the two second non-bridge protrusions comprises twobranches; a third respective one of the plurality of intersection fillpatterns is directly adjacent to two branches of a third respective oneof the two second non-bridge protrusions; and a fourth respective one ofthe plurality of intersection fill patterns is directly adjacent to twobranches of a fourth respective one of the two second non-bridgeprotrusions.

Optionally, the respective one of the plurality of intersection fillpatterns is surrounded by a first protrusion from a first row of theplurality of rows, a second protrusion from a second row of theplurality rows, a third protrusion from a first column of the pluralityof columns, and a fourth protrusion from a second column of theplurality of columns; the first row and the second row are adjacent toeach other; the first column and the second column are adjacent to eachother; the first protrusion comprises a first branch and a secondbranch; the second protrusion comprises a third branch and a fourthbranch; the third protrusion comprises a fifth branch and a sixthbranch; the fourth protrusion comprises a seventh branch and an eighthbranch; the first branch, the third branch, the fifth branch, theseventh branch respectively extend along a first direction; and thesecond branch, the fourth branch, the sixth branch, and the eighthbranch respectively extend along a second direction.

Optionally, the respective one of the plurality of intersection fillpatterns has a first pattern side, a second pattern side, a thirdpattern side, and a fourth pattern side; the first pattern side and thethird pattern side respectively extend along the first direction; andthe second pattern side and the fourth pattern side respectively extendalong the second direction.

Optionally, the first pattern side is directly adjacent to the firstbranch and the fifth branch; the second pattern side is directlyadjacent to the second branch and the eighth branch; the third patternside is directly adjacent to the third branch and the seventh branch;and the fourth pattern side is directly adjacent to the fourth branchand the sixth branch.

Optionally, an average width of the first branch along the seconddirection is ⅙ to ⅔ of an average width of the second branch along thefirst direction; an average width of the third branch along the seconddirection is ⅙ to ⅔ of an average width of the fourth branch along thefirst direction; an average width of the sixth branch along the firstdirection is ⅙ to ⅔ of an average width of the fifth branch along thesecond direction; and an average width of the eighth branch along thefirst direction is ⅙ to ⅔ of an average width of the seventh branchalong the second direction.

Optionally, a ratio between a first total surface area of the pluralityof intersection fill patterns and a second total combined surface areaof the first touch electrode blocks, the second touch electrode blocks,and the plurality of intersection fill patterns is greater than zero andno more than 1%.

Optionally, the touch control structure further comprises a plurality oftouch electrode bridges and an insulating layer between the plurality oftouch electrode bridges, and the electrode blocks of the plurality offirst touch electrodes and the plurality of second touch electrodes;wherein the plurality of touch electrode bridges respectively extendthrough vias in the insulating layer to respectively connect adjacentsecond electrode blocks in a respective column of the plurality ofcolumns of the plurality of second touch electrodes.

Optionally, the touch control structure further comprises a plurality ofinternal fill patterns respectively surrounded by electrode blocks ofthe plurality of second touch electrodes; wherein the plurality ofinternal fill patterns are absent in the plurality of first touchelectrodes.

In another aspect, the present disclosure provides a display panel,comprising the touch control structure described herein or fabricated bya method described herein, and a plurality of display elements.

In another aspect, the present disclosure provides a display apparatus,comprising the display panel described herein or fabricated by a methoddescribed herein, and an integrated circuit connected to the displaypanel.

BRIEF DESCRIPTION OF THE FIGURES

The following drawings are merely examples for illustrative purposesaccording to various disclosed embodiments and are not intended to limitthe scope of the present invention.

FIG. 1 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure.

FIG. 2 is a zoom-in view of a region surrounding a bridge intersectionin FIG. 1 .

FIG. 3 is a zoom-in view of a region surrounding a non-bridgeintersection in FIG. 1 .

FIG. 4 is a zoom-in view of a region surrounding a non-bridgeintersection in FIG. 1 .

FIG. 5 is a further zoom-in view of a region surrounding a non-bridgeintersection in FIG. 3 .

FIG. 6 illustrates the structure of an electrode block in someembodiments according to the present disclosure.

FIG. 7A is a zoom-in view of a region surrounding a first touchelectrode block in FIG. 1 .

FIG. 7B illustrates the structure of protrusions in the first touchelectrode block in FIG. 7A.

FIG. 8A is a zoom-in view of a region surrounding a second touchelectrode block in FIG. 1 .

FIG. 8B illustrates the structure of protrusions in the second touchelectrode block in FIG. 8A.

FIG. 9 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure.

FIG. 10 is a zoom-in view of a region surrounding a non-bridgeintersection in FIG. 9 .

FIG. 11 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure.

FIG. 12 is a zoom-in view of a region surrounding a non-bridgeintersection in FIG. 11 .

FIG. 13A is a zoom-in view of a region surrounding a first touchelectrode block in FIG. 11 .

FIG. 13B illustrates the structure of protrusions in the first touchelectrode block in FIG. 13A.

FIG. 14A is a zoom-in view of a region surrounding a second touchelectrode block in FIG. 11 .

FIG. 14B illustrates the structure of protrusions in the second touchelectrode block in FIG. 14A.

FIG. 15 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure.

FIG. 16 is a zoom-in view of a region surrounding a non-bridgeintersection in FIG. 15 .

FIG. 17A is a zoom-in view of a region surrounding a first touchelectrode block in FIG. 15 .

FIG. 17B illustrates the structure of protrusions in the first touchelectrode block in FIG. 17A.

FIG. 18A is a zoom-in view of a region surrounding a second touchelectrode block in FIG. 15 .

FIG. 18B illustrates the structure of protrusions in the second touchelectrode block in FIG. 18A.

FIG. 19 is a zoom-in view of a region surrounding a non-bridgeintersection in some embodiments according to the present disclosure.

FIG. 20 is further zoom-in view of FIG. 19 .

FIG. 21 is a zoom-in view of a region surrounding a non-bridgeintersection in some embodiments according to the present disclosure.

FIG. 22A is a plan view of a display panel in some embodiments accordingto the present disclosure.

FIG. 22B is a cross-sectional view along an A-A′ line in FIG. 22A.

FIG. 22C is a cross-sectional view along a B-B′ line in FIG. 22A.

FIG. 23 is a cross sectional view of a display panel in some embodimentsaccording to the present disclosure.

DETAILED DESCRIPTION

The disclosure will now be described more specifically with reference tothe following embodiments. It is to be noted that the followingdescriptions of some embodiments are presented herein for purpose ofillustration and description only. It is not intended to be exhaustiveor to be limited to the precise form disclosed.

The present disclosure provides, inter alia, a touch control structure,a display panel, and a display apparatus that substantially obviate oneor more of the problems due to limitations and disadvantages of therelated art. In one aspect, the present disclosure provides a touchcontrol structure. In some embodiments, the touch control structureincludes a plurality of first touch electrodes arranged in a pluralityof rows and a plurality of second touch electrodes arranged in aplurality of columns. In some embodiments, first touch electrode blocksof the plurality of rows and second touch electrode blocks of theplurality of columns are respectively arranged in interlaced matrices,forming a plurality of bridge intersections and a plurality ofnon-bridge intersections. Optionally, the touch control structure at arespective one of the plurality of bridge intersections includes arespective one of a plurality of first bridges connecting two adjacentfirst touch electrode blocks in a respective row and a respective one ofa plurality of second bridges connecting two adjacent second touchelectrode blocks in a respective column. Optionally, the touch controlstructure at a respective one of the plurality of non-bridgeintersections comprises a respective one of a plurality of intersectionfill patterns spaced apart from the first touch electrode blocks and thesecond touch electrode blocks.

FIG. 1 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure. Referring to FIG. 1 , the touch control structure in someembodiments includes a plurality of first touch electrodes TE1 and aplurality of second touch electrodes TE2. The plurality of first touchelectrodes TE1 are arranged in a plurality of rows, each of theplurality of rows is a respective one of the plurality of first touchelectrodes TEL Adjacent rows of the plurality of rows are isolated fromeach other. The plurality of second touch electrodes TE2 arranged in aplurality of columns, each of the plurality of columns is a respectiveone of the plurality of second touch electrodes TE2. Adjacent columns ofthe plurality of columns are isolated from each other. Optionally, thetouch control structure is a mutual capacitance type touch controlstructure. Optionally, the plurality of first touch electrodes TE1 are aplurality of touch scanning electrodes, and the plurality of secondtouch electrodes TE2 are a plurality of touch sensing electrodes.Optionally, the plurality of first touch electrodes TE1 are a pluralityof touch sensing electrodes, and the plurality of second touchelectrodes TE2 are a plurality of touch scanning electrodes.

Referring to FIG. 1 , the plurality of first touch electrodes TE1includes first touch electrode blocks EB1, and the plurality of secondtouch electrodes TE2 includes second touch electrode blocks EB2. Arespective row of the plurality of rows of the plurality of first touchelectrodes TE1 includes a row of first electrode blocks of the firsttouch electrode blocks EB1 electrically connected together along therespective row. A respective column of the plurality of columns of theplurality of second touch electrodes TE2 includes a column of secondelectrode blocks of the second touch electrode blocks EB2 electricallyconnected together along the respective column.

Optionally, the first touch electrode blocks EB1 and the second touchelectrode blocks EB2 are mesh electrode blocks comprising mesh lines.

In some embodiments, first touch electrode blocks EB1 of the pluralityof rows and second touch electrode blocks EB2 of the plurality ofcolumns are respectively arranged in interlaced matrices, forming aplurality of bridge intersections BI and a plurality of non-bridgeintersections NBI. The touch control structure at a respective one ofthe plurality of bridge intersections BI includes a respective one of aplurality of first bridges connecting two adjacent first touch electrodeblocks in a respective row and a respective one of a plurality of secondbridges connecting two adjacent second touch electrode blocks in arespective column.

As shown in FIG. 1 , the plurality of bridge intersections BI and theplurality of non-bridge intersections NBI are arranged in interlacedmatrices. Two adjacent rows of the plurality of bridge intersections BIare spaced apart by a row of the plurality of non-bridge intersectionsNBI; two adjacent rows of the plurality of non-bridge intersections NBIare spaced apart by a row of the plurality of bridge intersections BI.Two adjacent columns of the plurality of bridge intersections BI arespaced apart by a column of the plurality of non-bridge intersectionsNBI; two adjacent columns of the plurality of non-bridge intersectionsNBI are spaced apart by a column of the plurality of bridgeintersections BI.

FIG. 2 is a zoom-in view of a region surrounding a bridge intersectionin FIG. 1 . Referring to FIG. 1 and FIG. 2 , respectively at theplurality of bridge intersections BI, the plurality of first touchelectrodes TE1 includes a plurality of first bridges B1. At a respectiveone of the plurality of bridge intersections BI, a respective one of theplurality of first bridges B1 connects two adjacent first touchelectrode blocks of the first touch electrode blocks EB1 in a respectiverow. Respectively at the plurality of bridge intersections BI, theplurality of second touch electrodes TE2 includes a plurality of secondbridges B2. At a respective one of the plurality of bridge intersectionsBI, a respective one of the plurality of second bridges B2 connects twoadjacent second touch electrode blocks of the second touch electrodeblocks EB2 in a respective column. Optionally, the touch controlstructure further includes an insulating layer IN insulating therespective one of the plurality of first bridges B1 and the respectiveone of the plurality of second bridges B2 at a same respective one ofthe plurality of bridge intersections BI from each other.

In some embodiments, the touch control structure at a respective one ofthe plurality of non-bridge intersections includes a respective one of aplurality of intersection fill patterns spaced apart from the firsttouch electrode blocks and the second touch electrode blocks. FIG. 3 isa zoom-in view of a region surrounding a non-bridge intersection in FIG.1 . Referring to FIG. 1 and FIG. 3 , respectively at the plurality ofnon-bridge intersections NBI, the touch control structure includes aplurality of intersection fill patterns DE. At a respective one of theplurality of non-bridge intersections NBI, a respective one of aplurality of intersection fill patterns DE is spaced apart from thefirst touch electrode blocks EB1 and the second touch electrode blocksEB2 surrounding the respective one of a plurality of intersection fillpatterns DE. Optionally, the respective one of a plurality ofintersection fill patterns DE is a floating fill pattern. As usedherein, the term “floating” means electrically insulated from adjacentconductive elements or portions. For example, the respective one of aplurality of intersection fill patterns DE is spaced apart, andinsulated, from adjacent electrode blocks of the first touch electrodeblocks EB1 and the second touch electrode blocks EB2.

Optionally, the first touch electrode blocks EB1, the second touchelectrode blocks EB2, and the plurality of intersection fill patterns DEare in a same layer and made of a same material (e.g., a mesh electrodematerial).

FIG. 4 is a zoom-in view of a region surrounding a non-bridgeintersection in FIG. 1 . Referring to FIG. 1 and FIG. 4 , the respectiveone of the plurality of intersection fill patterns DE is in a spacesurrounded by two first touch electrode blocks respectively from twoadjacent rows (e.g., an electrode block EB1-a from a first adjacent rowR1 and an electrode block EB1-b from a second adjacent row R2) of theplurality of rows and two second touch electrode blocks respectivelyfrom two adjacent columns (e.g., an electrode block EB2-a from a firstadjacent column C1 and an electrode block EB2-b from a second adjacentcolumn C2) of the plurality of columns. The respective one of theplurality of intersection fill patterns DE is in an approximate centerof four surrounding bridge intersections of the plurality of bridgeintersections BI.

The two first touch electrode blocks respectively from the two adjacentrows (e.g., the electrode block EB1-a from the first adjacent row R1 andthe electrode block EB1-b from the second adjacent row R2) are spacedapart from each other by the respective one of the plurality ofintersection fill patterns DE. The two second touch electrode blocksrespectively from the two adjacent columns (e.g., the electrode blockEB2-a from the first adjacent column C1 and the electrode block EB2-bfrom the second adjacent column C2) are spaced apart from each other bythe respective one of the plurality of intersection fill patterns DE.

Referring to FIG. 4 again, in some embodiments, a first virtual centerline V11 of the two first touch electrode blocks respectively from thetwo adjacent rows (e.g., the electrode block EB1-a from the firstadjacent row R1 and the electrode block EB1-b from the second adjacentrow R2) crosses over the respective one of the plurality of intersectionfill patterns DE. A second virtual center line V12 of the two secondtouch electrode blocks respectively from the two adjacent columns of theplurality of columns (e.g., the electrode block EB2-a from the firstadjacent column C1 and the electrode block EB2-b from the secondadjacent column C2) crosses over the respective one of the plurality ofintersection fill patterns DE. Along the first virtual center line V11,the two first touch electrode blocks respectively from the two adjacentrows (e.g., the electrode block EB1-a from the first adjacent row R1 andthe electrode block EB1-b from the second adjacent row R2) are insulatedfrom each other, and spaced apart from each other by the respective oneof the plurality of intersection fill patterns DE. Electrode blocks ineach row (e.g., the first adjacent row R1 or the second adjacent row R2)are electrically connected through bridges (e.g., multiple ones of theplurality of first bridges B1 depicted in FIG. 2 ). Along the secondvirtual center line V12, the two second touch electrode blocksrespectively from the two adjacent columns of the plurality of columns(e.g., the electrode block EB2-a from the first adjacent column C1 andthe electrode block EB2-b from the second adjacent column C2) areinsulated from each other, and spaced apart from each other by therespective one of the plurality of intersection fill patterns DE.Electrode blocks in each column (e.g., the first adjacent column C1 orthe second adjacent column C2) are electrically connected throughbridges (e.g., multiple ones of the plurality of second bridges B2depicted in FIG. 2 ).

FIG. 5 is a further zoom-in view of a region surrounding a non-bridgeintersection in FIG. 3 . Referring to FIG. 1 , FIG. 3 , and FIG. 5 , insome embodiments, the respective one of the plurality of intersectionfill patterns DE1 is in a space surrounded by a first portion P1, asecond portion P2, a third portion P3, and a fourth portion P4. Thefirst portion P1 and the second portion P2 are respectively from thefirst touch electrode blocks respectively from two adjacent rows of theplurality of rows (e.g., the electrode block EB1-a from the firstadjacent row R1 and the electrode block EB1-b from the second adjacentrow R2, as depicted in FIG. 4 ). The third portion and the fourthportion are respectively from the two second touch electrode blocksrespectively from two adjacent columns of the plurality of columns(e.g., the electrode block EB2-a from the first adjacent column C1 andthe electrode block EB2-b from the second adjacent column C2, asdepicted in FIG. 4 ). The first portion P1 is respectively spaced apartfrom the second portion P2, the third portion P3, and the fourth portionP4 by the respective one of the plurality of intersection fill patternsDE. The second portion P2 is respectively spaced apart from the firstportion, the third portion, and the fourth portion by the respective oneof the plurality of intersection fill patterns DE. The third portion P3is respectively spaced apart from the first portion, the second portion,and the fourth portion by the respective one of the plurality ofintersection fill patterns DE. The fourth portion P4 is respectivelyspaced apart from the first portion, the second portion, and the thirdportion by the respective one of the plurality of intersection fillpatterns DE. As shown in FIG. 1 , FIG. 3 , and FIG. 5 , the firstportion P1, the second portion P2, the third portion P3, and the fourthportion P4 are protrusions directly adjacent to the respective one ofthe plurality of intersection fill patterns DE.

As used herein, the term “protrusion” refers to a portion of anelectrode block protruding from a main portion of the electrode block,the main portion and the protrusion are on a same substrate surface.FIG. 6 illustrates the structure of an electrode block in someembodiments according to the present disclosure. Referring to FIG. 6 ,the electrode block includes a diamond shaped main portion MB, and aplurality of protrusions PT, each of which protruding from a side or anapex of the main portion MB of the electrode block. The main portion MBtypically has a regular shape such as a square shape, a diamond shape, arectangular shape, or a circular shape.

In some embodiments, a respective first block of the first touchelectrode blocks includes two first bridge protrusions along a rowdirection and two first non-bridge protrusions along a column direction.FIG. 7A is a zoom-in view of a region surrounding a first touchelectrode block in FIG. 1 . Referring to FIG. 1 and FIG. 7A, arespective first block of the first touch electrode blocks EB1 in someembodiments includes two first bridge protrusions (e.g., protrusionsPB-1 and PB-2) along the row direction and two first non-bridgeprotrusions (e.g., protrusions NPB-1 and NPB-2) along a columndirection. The two first bridge protrusions PB-1 and PB-2 arerespectively connected to two adjacent first touch electrode blocksrespectively through two adjacent bridge intersections of the pluralityof bridge intersections BI along the row direction. The two firstnon-bridge protrusions NPB-1 and NPB-2 are respectively directlyadjacent to two adjacent fill patterns of the plurality of intersectionfill patterns DE respectively at two adjacent non-bridge intersectionsof the plurality of non-bridge intersections NBI along the columndirection.

FIG. 7B illustrates the structure of protrusions in the first touchelectrode block in FIG. 7A. Referring to FIG. 7A and FIG. 7B, the twofirst non-bridge protrusions NPB-1 and NPB-2 are substantially intactcompared with the two first bridge protrusions PB-1 and PB-2. Forexample, each of the two first bridge protrusions PB-1 and PB-2 has afirst number of branches; each of the two first non-bridge protrusionsNPB-1 and NPB-2 has a second number of branches; and the first number ofbranches equals to the second number of branches. Referring to FIG. 7Aand FIG. 7B, the NPB-1 has two branches br, the NPB-2 has two branchesbr, the PB-1 has two branches br, and the PB-2 also has two branches br.Each of the two first bridge protrusions and the two first non-bridgeprotrusions has a same number of branches. As used herein, the term“substantially intact” refers to at least 50 percent, e.g., at least 60percent, at least 70 percent, at least 80 percent, at least 90 percent,at least 95 percent, at least 99 percent, or 100 percent intact.

In some embodiments, each of the two first non-bridge protrusionsincludes two branches br. Referring to FIG. 7A and FIG. 7B, a firstrespective one of the plurality of intersection fill patterns DE isdirectly adjacent to two branches of a first respective one (NPB-1) ofthe two first non-bridge protrusions; and a second respective one of theplurality of intersection fill patterns DE is directly adjacent to twobranches of a second respective one (NPB-2) of the two first non-bridgeprotrusions.

In some embodiments, a respective second block of the second touchelectrode blocks includes two second bridge protrusions along a columndirection and two second non-bridge protrusions along a row direction.FIG. 8A is a zoom-in view of a region surrounding a second touchelectrode block in FIG. 1 . Referring to FIG. 1 and FIG. 8A, arespective second block of the second touch electrode blocks EB2 in someembodiments includes two second bridge protrusions (e.g., protrusionsPB-3 and PB-4) along the column direction and two second non-bridgeprotrusions (e.g., protrusions NPB-3 and NPB-4) along a row direction.The two second bridge protrusions PB-3 and PB-4 are respectivelyconnected to two adjacent second touch electrode blocks respectivelythrough two adjacent bridge intersections of the plurality of bridgeintersections BI along the column direction. The two second non-bridgeprotrusions NPB-3 and NPB-4 are respectively directly adjacent to twoadjacent fill patterns of the plurality of intersection fill patterns DErespectively at two adjacent non-bridge intersections of the pluralityof non-bridge intersections NBI along the row direction.

FIG. 8B illustrates the structure of protrusions in the second touchelectrode block in FIG. 8A. Referring to FIG. 8A and FIG. 8B, the twosecond non-bridge protrusions NPB-3 and NPB-4 are substantially intactcompared with the two second bridge protrusions PB-3 and PB-4. Forexample, each of the two second bridge protrusions has a third number ofbranches; each of the two second non-bridge protrusions has a fourthnumber of branches; and the third number of branches equals to thefourth number of branches. Referring to FIG. 8A and FIG. 8B, the NPB-3has two branches br, the NPB-4 has two branches br, the PB-3 has twobranches br, and the PB-4 also has two branches br. Each of the twosecond bridge protrusions and the two second non-bridge protrusions hasa same number of branches.

In some embodiments, each of the two second non-bridge protrusionsincludes two branches br. Referring to FIG. 8A and FIG. 8B, a thirdrespective one of the plurality of intersection fill patterns DE isdirectly adjacent to two branches of a third respective one (NPB-3) ofthe two second non-bridge protrusions; and a fourth respective one ofthe plurality of intersection fill patterns is directly adjacent to twobranches of a fourth respective one (NPB-4) of the two second non-bridgeprotrusions.

FIG. 9 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure. FIG. 10 is a zoom-in view of a region surrounding anon-bridge intersection in FIG. 9 . The touch control structure in FIG.9 and FIG. 10 is absent of any intersection fill pattern in theplurality of non-bridge intersections NBI.

Mutual capacitance between adjacent first and second touch electrodeblock (e.g., mutual capacitance between adjacent touch scanningelectrode Tx and touch sensing electrode Rx) significantly affects touchperformance of a touch control structure. The higher the value of themutual capacitance, the longer the signal loading would be. Often times,the mutual capacitance in a touch control structure is relatively largesuch that the signal loading time is relatively long. Comparing thetouch control structure in FIG. 1 with the touch control structure inFIG. 9 , by having a fill pattern in a non-bridge intersection of thetouch control structure, the mutual capacitance between adjacent touchscanning electrode Tx and touch sensing electrode Rx can be effectivelycontrolled, e.g., decreased. Comparing with the touch control structurein FIG. 9 , the touch control structure in FIG. 1 has a relatively lowermutual capacitance between adjacent first and second touch electrodeblock, resulting in an increase in signal loading time in the touchcontrol structure, leading to enhanced touch performance.

TABLE 1 Parameters measured in touch control structures in someembodiments according to the present disclosure. Touch control Touchcontrol structure of FIG. 9 structure of FIG. 1 Surface area ratio 0 0.4Cm (pF) 1.017 1.011 Cm' (pF) 0.963 0.957 ΔCm (pF) 0.054 0.054 ΔCm/Cm5.3% 5.33% Cp1 (pF) 9.76 9.77 Cp2 (pF) 11.19 11.15 R1 (Ω) 28.2 25.8 R2(Ω) 25.5 24.5

Table 1 summarizes parameters measured in touch control structures insome embodiments according to the present disclosure. The parameter“surface area ratio” in table 1 refers to a ratio between a first totalsurface area of the plurality of intersection fill patterns and a secondtotal combined surface area of the first touch electrode blocks, thesecond touch electrode blocks, and the plurality of intersection fillpatterns. The surface area ratio is zero in the touch control structureof FIG. 9 because it does not have any intersection fill patterns. Thesurface area ratio in the touch control structure of FIG. 1 is 0.4%. Theparameter Cm in table 1 refers to mutual capacitance between first touchelectrode blocks and second touch electrode blocks (e.g., Tx and Rx) inabsence of a touch on the touch control structure. The parameter Cm′ intable 1 refers to mutual capacitance between first touch electrodeblocks and second touch electrode blocks (e.g., Tx and Rx) upon a touchon the touch control structure. The parameter ΔCm in table 1 refers to acapacitance difference (Cm−Cm′). The parameter Cp1 in table 1 refers toself-capacitance of the first touch electrode blocks. The parameter Cp2in table 1 refers to self-capacitance of the second touch electrodeblocks. The parameter R1 in table 1 refers to resistance of the firsttouch electrode blocks. The parameter R2 in table 1 refers to resistanceof the second touch electrode blocks. As used herein, the term “surfacearea” refers to an area occupied by the electrode blocks or the fillpatterns. In case the electrode blocks or fill patterns are meshelectrode blocks or mesh patterns, the “area occupied by” refers to anarea encircled by outer boundaries (forms by line breaks in the meshlines) respectively of the electrode blocks and the fill patterns.

Comparing the touch control structure in FIG. 1 with the touch controlstructure in FIG. 9 , by having a fill pattern in a non-bridgeintersection of the touch control structure, the mutual capacitance Cmor Cm′ decreases, while the capacitance difference ΔCm remain the same.The parameter ΔCm/Cm increases, while resistance R1 of the first touchelectrode blocks and resistance R2 of the second touch electrode blocksboth decrease. Thus, by having a fill pattern in a non-bridgeintersection of the touch control structure, the signal loading time ofthe touch control structure can be lowered significantly.

In some embodiments, the two first non-bridge protrusions are at leastpartially truncated compared with the two first bridge protrusions. Insome embodiments, the two second non-bridge protrusions are at leastpartially truncated compared with the two second bridge protrusions.FIG. 11 is a schematic diagram illustrating the structure of a touchcontrol structure in some embodiments according to the presentdisclosure. FIG. 12 is a zoom-in view of a region surrounding anon-bridge intersection in FIG. 11 . FIG. 13A is a zoom-in view of aregion surrounding a first touch electrode block in FIG. 11 . FIG. 13Billustrates the structure of protrusions in the first touch electrodeblock in FIG. 13A. FIG. 14A is a zoom-in view of a region surrounding asecond touch electrode block in FIG. 11 . FIG. 14B illustrates thestructure of protrusions in the second touch electrode block in FIG.14A. Referring to FIGS. 11, 12, 13A, 13B, 14A, and 14B, the respectiveone of the plurality of fill patterns DE has a greater surface area ascompared to the respective one of the plurality of fill patterns DEdepicted in FIGS. 1-6, 7A, 7B, 8A, and 8B. To make space for forming therespective one of the plurality of fill patterns DE in FIGS. 11, 12,13A, 13B, 14A, and 14B, at least one of the protrusions at therespective one of the plurality of non-bridge intersections NBI is atleast partially truncated.

Comparing the first touch electrode block in FIG. 13B with the firsttouch electrode block in FIG. 7B, each of the two first non-bridgeprotrusions NPB-1 and NPB-2 in FIG. 13B is at least partially truncatedas compared to their counterparts in FIG. 7B. As shown in FIG. 13B,NPB-1 has at least a partially truncated branch br′, and NPB-2 also hasat least a partially truncated branch br′. Comparing the second touchelectrode block in FIG. 14B with the second touch electrode block inFIG. 8B, each of the two second non-bridge protrusions NPB-3 and NPB-4in FIG. 14B is at least partially truncated as compared to theircounterparts in FIG. 8B. As shown in FIG. 14B, NPB-3 has at least apartially truncated branch br′, and NPB-4 also has at least a partiallytruncated branch br′.

In some embodiments, the two first non-bridge protrusions are at leastpartially truncated compared with the two first bridge protrusions.Referring to FIG. 13A and FIG. 13B, each of the two first non-bridgeprotrusions NPB-1 and NPB-2 is at least partially truncated comparedwith the two first bridge protrusions PB-1 and PB-2. For example, thePB-1 has two branches br, and the PB-2 also has two branches br. TheNPB-1 has a branch br that is substantially intact and a branch br′ thatis at least partially truncated, as compared to the two branches br inthe PB-1 and the PB-2. The NPB-2 also has a branch br that issubstantially intact and a branch br′ that is at least partiallytruncated, as compared to the two branches br in the PB-1 and the PB-2.

In some embodiments, the two second non-bridge protrusions are at leastpartially truncated compared with the two second bridge protrusions.Referring to FIG. 14A and FIG. 14B, each of the two second non-bridgeprotrusions NPB-3 and NPB-4 is at least partially truncated comparedwith the two second bridge protrusions PB-3 and PB-4. For example, thePB-3 has two branches br, and the PB-4 also has two branches br. TheNPB-3 has a branch br that is substantially intact and a branch br′ thatis at least partially truncated, as compared to the two branches br inthe PB-3 and the PB-4. The NPB-4 also has a branch br that issubstantially intact and a branch br′ that is at least partiallytruncated, as compared to the two branches br in the PB-3 and the PB-4.

TABLE 2 Parameters measured in touch control structures in someembodiments according to the present disclosure. Touch control Touchcontrol structure of FIG. 11 structure of FIG. 1 Surface area ratio 0.60.4 Cm (pF) 0.988 1.011 Cm' (pF) 0.934 0.957 ΔCm (pF) 0.054 0.054 ΔCm/Cm5.5% 5.33% Cp1 (pF) 9.6 9.77 Cp2 (pF) 11.1 11.15 R1 (Ω) 25.8 25.8 R2 (Ω)24.5 24.5

Table 2 summarizes parameters measured in touch control structures insome embodiments according to the present disclosure. The surface arearatio in the touch control structure of FIG. 1 is 0.4%. The surface arearatio in the touch control structure of FIG. 11 is increased to 0.6%.With the surface area ratio increased and the protrusions of the touchelectrode blocks remain mostly intact (though may be partiallytruncated), the mutual capacitance Cm and Cm′ further decrease to lowervalues (0.988 and 0.934, respectively), though the capacitancedifference ΔCm remain substantially unchanged. The ΔCm/Cm value furtherincreases (from 5.33% to 5.5%). Resistance R1 of the first touchelectrode blocks and resistance R2 of the second touch electrode blocksare not affected by the increased surface area ratio, and remainsubstantially the same as those valued in the touch control structure ofFIG. 1 .

Comparing the touch control structure in FIG. 1 with the touch controlstructure in FIG. 11 , by further increasing the surface area of thefill pattern while maintaining the protrusions of the touch electrodeblocks substantially intact, the mutual capacitance Cm or Cm′ can befurther decreased without increasing resistance of the touch electrodeblocks. The signal loading time of the touch control structure can befurther lowered. The touch performance of the touch control structurecan be further enhanced.

In some embodiments, and referring to FIG. 11 , the touch controlstructure further includes a plurality of internal fill patterns DEIrespectively surrounded by, by insulated from, electrode blocks of theplurality of second touch electrodes TE2. Optionally, the plurality ofinternal fill patterns DEI are absent in the plurality of first touchelectrodes TEL In some embodiments, the plurality of internal fillpatterns DEI are mesh patterns made of mesh lines. The periphery of arespective one of the plurality of internal fill patterns DEI isinsulated from a respective second touch electrode block by line breaksin the mesh lines of the mesh patterns. Optionally, the periphery of therespective one of the plurality of internal fill patterns DEI is formedby line breaks in the mesh lines of the mesh patterns. In someembodiments, the electrode blocks of the plurality of first touchelectrodes and the plurality of second touch electrodes, and theplurality of internal fill patterns DEI, are formed from a mesh layer.For example, the electrode blocks of the plurality of first touchelectrodes and the plurality of second touch electrodes, and theplurality of internal fill patterns DEI, are formed by forming a meshlayer on a base substrate, and patterning the mesh layer to form theelectrode blocks of the plurality of first touch electrodes and theplurality of second touch electrodes, and the plurality of internal fillpatterns DEI.

In some embodiments, at least one of the two first non-bridgeprotrusions is fully truncated compared with the two first bridgeprotrusions. In some embodiments, at least one of the two secondnon-bridge protrusions is fully truncated compared with the two secondbridge protrusions. FIG. 15 is a schematic diagram illustrating thestructure of a touch control structure in some embodiments according tothe present disclosure. FIG. 16 is a zoom-in view of a regionsurrounding a non-bridge intersection in FIG. 15 . FIG. 17A is a zoom-inview of a region surrounding a first touch electrode block in FIG. 15 .FIG. 17B illustrates the structure of protrusions in the first touchelectrode block in FIG. 17A. FIG. 18A is a zoom-in view of a regionsurrounding a second touch electrode block in FIG. 15 . FIG. 18Billustrates the structure of protrusions in the second touch electrodeblock in FIG. 18A. Referring to FIGS. 15, 16, 17A, 17B, 18A, and 18B,the respective one of the plurality of fill patterns DE has an evengreater surface area as compared to the respective one of the pluralityof fill patterns DE depicted in FIGS. 11, 12, 13A, 13B, 14A, and 14B. Tomake space for forming the respective one of the plurality of fillpatterns DE in FIGS. 15, 16, 17A, 17B, 18A, and 18B, at least one of theprotrusions at the respective one of the plurality of non-bridgeintersections NBI is fully truncated.

Comparing the first touch electrode block in FIG. 17B with the firsttouch electrode block in FIG. 7B or FIG. 13B, each of the two firstnon-bridge protrusions NPB-1 and NPB-2 in FIG. 7B or FIG. 13B is fullytruncated. As shown in FIG. 17B, there is no first non-bridgeprotrusions in the first touch electrode blocks EB1. Comparing thesecond touch electrode block in FIG. 18B with the second touch electrodeblock in FIG. 8B or FIG. 14B, each of the two second non-bridgeprotrusions NPB-3 and NPB-4 in FIG. 8B or FIG. 14B is fully truncated.As shown in FIG. 18B, there is no second non-bridge protrusions in thesecond touch electrode blocks EB2.

In some embodiments, at least one of the two first non-bridgeprotrusions is fully truncated compared with the two first bridgeprotrusions. Referring to FIG. 17A and FIG. 17B, there is no firstnon-bridge protrusions in the first touch electrode blocks EB1 (beingfully truncated).

In some embodiments, at least one of the two second non-bridgeprotrusions is fully truncated compared with the two second bridgeprotrusions. Referring to FIG. 18A and FIG. 18B, there is no secondnon-bridge protrusions in the second touch electrode blocks EB2 (beingfully truncated).

TABLE 3 Parameters measured in touch control structures in someembodiments according to the present disclosure. Touch control Touchcontrol structure of FIG. 15 structure of FIG. 1 Surface area ratio 30.4 Cm (pF) 0.88 1.011 Cm' (pF) 0.829 0.957 ΔCm (pF) 0.051 0.054 ΔCm/Cm5.8% 5.33% Cp1 (pF) 8.88 9.77 Cp2 (pF) 10.3 11.15 R1 (Ω) 25.8 25.8 R2(Ω) 24.5 24.5

Table 3 summarizes parameters measured in touch control structures insome embodiments according to the present disclosure. The surface arearatio in the touch control structure of FIG. 1 is 0.4%. The surface arearatio in the touch control structure of FIG. 15 is increased to 3%. Withthe surface area ratio increased and the protrusions of the touchelectrode blocks truncated, the mutual capacitance Cm and Cm′ furtherdecrease to lower values (0.88 and 0.829, respectively). Resistance R1of the first touch electrode blocks and resistance R2 of the secondtouch electrode blocks are not affected by the increased surface arearatio, and remain substantially the same as those valued in the touchcontrol structure of FIG. 1 . However, the capacitance difference ΔCm isadversely affected by having touch electrode blocks with protrusionstruncated. A decreased capacitance difference ΔCm adversely affectstouch performance of the touch control structure.

In some embodiments, a ratio between a first total surface area of theplurality of intersection fill patterns and a second total combinedsurface area of the first touch electrode blocks, the second touchelectrode blocks, and the plurality of intersection fill patterns isgreater than zero and no more than 3%, for example, greater than zeroand no more than 2.5%, greater than zero and no more than 2.0%, greaterthan zero and no more than 1.5%, or greater than zero and no more than1%.

FIG. 19 is a zoom-in view of a region surrounding a non-bridgeintersection in some embodiments according to the present disclosure.FIG. 20 is further zoom-in view of FIG. 19 . Referring to FIG. 19 andFIG. 20 , in some embodiments, an entirety of a periphery P of therespective one of the plurality of intersection fill patterns DE issurrounded by respective portions of a first side S1 of the firstportion P1, a second side S2 of the second portion P2, a third side S3of the third portion P3, and a fourth side S4 of a fourth portion P4.Optionally, the first side S1 and the second side S2 are substantiallyparallel to each other. Optionally, the third side S3 and the fourthside S4 are substantially parallel to each other.

In some embodiments, electrode blocks of the plurality of first touchelectrodes TE1 and the plurality of second touch electrodes TE2 arerespectively mesh electrode blocks made of mesh lines. Adjacentelectrode blocks of the plurality of first touch electrodes and theplurality of second touch electrodes are insulated from each other byline breaks in mesh lines of the mesh electrode blocks. A respectivefirst electrode block and a respective second electrode block adjacentto each other are insulated from each other by line breaks in meshlines. As shown in FIG. 19 and FIG. 20 , the first portion P1 isinsulated from the third portion P3 and from the fourth portion P4 bylines breaks in the mesh lines. Similarly, the second portion P2 isinsulated from the third portion P3 and from the fourth portion P4 bylines breaks in the mesh lines; the third portion P3 is insulated fromthe first portion P1 and the second portion P2 by lines breaks in themesh lines; and the fourth portion P4 is insulated from the firstportion P1 and the second portion P2 by lines breaks in the mesh lines.Optionally, the first side S1, the second side S2, the third side S3,and the fourth side S4, are respectively formed by virtually connectedline breaks respectively of the first portion P1, the second portion P2,the third portion P3, and the fourth portion P4.

In some embodiments, the plurality of intersection fill patterns DE aremesh patterns made of mesh lines. The periphery P of the respective oneof the plurality of intersection fill patterns DE is insulated from thefirst portion P1, the second portion P2, the third portion P3, and thefourth portion P4 by line breaks in the mesh lines of the mesh patterns.Optionally, the periphery of the respective one of the plurality ofintersection fill patterns DE is formed by line breaks in the mesh linesof the mesh patterns.

In some embodiments, each of the first portion, the second portion, thethird portion, and the fourth portion includes a respective protrusiondirectly adjacent to the respective one of the plurality of intersectionfill patterns. In some embodiments, the respective protrusion comprisesa first branch and a second branch. Optionally, the first branch extendsalong a first direction; the second branch extends along a seconddirection; and the first direction and the second direction aresubstantially perpendicular to each other. FIG. 21 is a zoom-in view ofa region surrounding a non-bridge intersection in some embodimentsaccording to the present disclosure. Referring to FIG. 21 , therespective one of the plurality of intersection fill patterns DE is in aspace surrounded by a first protrusion PT1, a second protrusion PT2, athird protrusion PT3, and a fourth protrusion PT4. Referring to FIG. 1 ,FIG. 11 , FIG. 15 , and FIG. 21 , in some embodiments, the firstprotrusion PT1 is from a first row of the plurality of rows, the secondprotrusion PT2 is from a second row of the plurality rows, the thirdprotrusion PT3 is from a first column of the plurality of columns, andthe fourth protrusion PT4 is from a second column of the plurality ofcolumns. The first row and the second row are adjacent to each other.The first column and the second column are adjacent to each other.

In some embodiments, the first protrusion PT1 includes a first branchbr1 and a second branch br2; the second protrusion PT2 includes a thirdbranch br3 and a fourth branch br4; the third protrusion PT3 includes afifth branch br5 and a sixth branch br6; and the fourth protrusion PT4includes a seventh branch br7 and an eighth branch br8. Optionally, thefirst branch br, the third branch br3, the fifth branch br5, the seventhbranch br7 respectively extend along a first direction D1. Optionally,the second branch br2, the fourth branch br4, the sixth branch br6, andthe eighth branch br8 respectively extend along a second direction D2.

In some embodiments, the electrode blocks of the plurality of firsttouch electrodes and the plurality of second touch electrodes, and theplurality of intersection fill patterns, are formed from a mesh layer.For example, the electrode blocks of the plurality of first touchelectrodes and the plurality of second touch electrodes, and theplurality of intersection fill patterns, are formed by forming a meshlayer on a base substrate, and patterning the mesh layer to form theelectrode blocks of the plurality of first touch electrodes and theplurality of second touch electrodes, and the plurality of intersectionfill patterns. In some embodiments, the touch control structure soformed in some embodiments includes gaps to respectively space apart theelectrode blocks of the plurality of first touch electrodes and theplurality of second touch electrodes, and the plurality of intersectionfill patterns. Referring to FIG. 19 and FIG. 20 , the touch controlstructure includes a first gap G1 to space apart a first boundary B1 ofthe respective one of the plurality of fill patterns DE from the firstside S1 of the first portion P1, a second gap G2 to space apart a secondboundary B2 of the respective one of the plurality of fill patterns DEfrom the second side S2 of the second portion P2, a third gap G3 tospace apart a third boundary B3 of the respective one of the pluralityof fill patterns DE from the third side S3 of the third portion P3, anda fourth gap G4 to space apart a fourth boundary B4 of the respectiveone of the plurality of fill patterns DE from the fourth side S4 of thefourth portion P4. Optionally, directly adjacent non-bridge protrusionand fill pattern are insulated from each other by a gap having a gapwidth in a range of 1 μm to 10 μm, e.g., 1 μm to 2 μm, 2 μm to 3 μm, 3μm to 4 μm, 4 μm to 5 μm, 5 μm to 6 μm, 6 μm to 7 μm, 7 μm to 8 μm, 8 μmto 9 μm, or 9 μm to 10 μm. In one example, the gap width isapproximately 5.2 μm. Optionally, the mesh layer has a mesh line widthin a range of 1 μm to 5 μm, e.g., 1 μm to 2 μm, 2 μm to 3 μm, 3 μm to 4μm, or 4 μm to 5 μm. Optionally, the mesh line width is approximately 3μm.

In some embodiments, the respective one of the plurality of intersectionfill patterns DE has a first pattern side ps1, a second pattern sideps2, a third pattern side ps3, and a fourth pattern side ps4. As shownin FIG. 21 , in some embodiments, the first pattern side ps1 and thethird pattern side ps3 respectively extend along the first direction D1;and the second pattern side ps2 and the fourth pattern side ps4respectively extend along the second direction D2. Optionally, the firstpattern side ps1 is directly adjacent to the first branch br1 and thefifth branch br5; the second pattern side ps2 is directly adjacent tothe second branch br2 and the eighth branch br8; the third pattern sideps3 is directly adjacent to the third branch br3 and the seventh branchbr7; and the fourth pattern side ps4 is directly adjacent to the fourthbranch br4 and the sixth branch br6.

In some embodiments, an average width of the first branch br1 along thesecond direction D2 is ⅙ to ⅔ (e.g., ⅓ to ⅗) of an average width of thesecond branch br2 along the first direction D1; an average width of thethird branch br3 along the second direction D2 is ⅙ to ⅔ (e.g., ⅓ to ⅗)of an average width of the fourth branch br4 along the first directionD1; an average width of the sixth branch br6 along the first directionD1 is ⅙ to ⅔ (e.g., ⅓ to ⅗) of an average width of the fifth branch br5along the second direction D2; and an average width of the eighth branchbr8 along the first direction is ⅙ to ⅔ (e.g., ⅓ to ⅗) of an averagewidth of the seventh branch br7 along the second direction D2.

In another aspect, the present disclosure provides a display panelincluding the touch control structure described herein or fabricated bya method described herein, a plurality of display elements, and aplurality of thin film transistors for driving the plurality of displayelements. Optionally, the display elements includes a plurality of lightemitting diodes, for example, in an organic light emitting diode displaypanel. Optionally, the display elements include a liquid crystal layerin a plurality of subpixels, for example, in a liquid crystal displaypanel.

FIG. 22A is a plan view of a display panel in some embodiments accordingto the present disclosure. FIG. 22B is a cross-sectional view along anA-A′ line in FIG. 22A. FIG. 22C is a cross-sectional view along a B-B′line in FIG. 22A. Referring to FIGS. 22A to 22C, the display panel insome embodiments includes an array substrate AS and a counter substrateCS assembled together. In some embodiments, the display panel includesdisplay elements and thin film transistors. Optionally, the displayelements includes a plurality of light emitting diodes, for example, inan organic light emitting diode display panel. Optionally, the displayelements include a liquid crystal layer in a plurality of subpixels, forexample, in a liquid crystal display panel. Referring to FIGS. 22B to22C, in some embodiments, the array substrate AS includes a basesubstrate BS, a plurality of thin film transistors TFT on the basesubstrate BS, and a plurality of light emitting elements LE on the basesubstrate BS and respectively connected to the plurality of thin filmtransistors TFT.

In some embodiments, the array substrate AS further includes anencapsulating layer EN encapsulating the plurality of light emittingelements LE. In some embodiments, the counter substrate CS includes abuffer layer BUF and a touch insulating layer TI on the buffer layerBUF. The touch control structure further includes a plurality of touchelectrode bridges EB. The touch insulating layer TI is between theplurality of touch electrode bridges EB, and the electrode blocks of theplurality of first touch electrodes TE1 and the plurality of secondtouch electrodes TE2. The plurality of touch electrode bridges EBrespectively extend through vias Vb in the touch insulating layer TI torespectively connect adjacent second electrode blocks in a respectivecolumn of the plurality of column of the plurality of second touchelectrodes TE2.

FIG. 23 is a cross sectional view of a display panel in some embodimentsaccording to the present disclosure. Referring to FIG. 23 , in thedisplay region, the display panel includes a base substrate BS, aplurality of thin film transistors TFT on the base substrate BS, apassivation layer PVX on a side of the plurality of thin filmtransistors TFT away from the base substrate BS, a first planarizationlayer PLN1 on side of the passivation layer PVX away from the basesubstrate BS, a relay electrode RE on side of the first planarizationlayer PLN1 away from the passivation layer PVX, a second planarizationlayer PLN2 on a side of the relay electrode RE away from the firstplanarization layer PLN1, a pixel definition layer PDL on a side of thesecond planarization layer PLN2 away from the first planarization layerPLN1 and defining subpixel apertures, an anode AD on a side of thesecond planarization layer PLN2 away from the first planarization layerPLN1, a light emitting layer EL on a side of the anode AD away from thesecond planarization layer PLN2, a cathode CD on a side of the lightemitting layer EL away from the anode AD, a first inorganicencapsulating layer CVD1 on a side of the cathode CD away from lightemitting layer EL, an organic encapsulating layer IJP on a side of thefirst inorganic encapsulating layer CVD1 away from the cathode CD, asecond inorganic encapsulating layer CVD2 on a side of the organicencapsulating layer IJP away from the first inorganic encapsulatinglayer CVD1, a buffer layer BUF on a side of the second inorganicencapsulating layer CVD2 away from the organic encapsulating layer IJP,a touch insulating layer TI on a side of the buffer layer BUF away fromthe second inorganic encapsulating layer CVD2, touch electrodes (e.g.,the plurality of first touch electrodes TE1 and the plurality of secondtouch electrodes TE2 as shown in FIG. 23 ) on a side of the touchinsulating layer TI away from the buffer layer BUF, and an overcoatlayer OC on a side of the touch electrodes away from the touchinsulating layer TI.

In another aspect, the present disclosure provides a display apparatusincluding a display panel described herein or fabricated by a methoddescribed herein, and one or more integrated circuits connected to thedisplay panel. Examples of appropriate display apparatuses include, butare not limited to, an electronic paper, a mobile phone, a tabletcomputer, a television, a monitor, a notebook computer, a digital album,a GPS, etc. Optionally, the display apparatus is an organic lightemitting diode display apparatus. Optionally, the display apparatus is aliquid crystal display apparatus.

In another aspect, the present disclosure provides a method offabricating a touch control structure. In some embodiments, the methodincludes forming a plurality of first touch electrodes arranged in aplurality of rows and a plurality of second touch electrodes arranged ina plurality of columns. First touch electrode blocks of the plurality ofrows and second touch electrode blocks of the plurality of columns arerespectively arranged in interlaced matrices, forming a plurality ofbridge intersections and a plurality of non-bridge intersections.Optionally, the method further includes, at a respective one of theplurality of bridge intersections, forming a respective one of aplurality of first bridges connecting two adjacent first touch electrodeblocks in a respective row and a respective one of a plurality of secondbridges connecting two adjacent second touch electrode blocks in arespective column. Optionally, the method further includes, at arespective one of the plurality of non-bridge intersections, forming arespective one of a plurality of intersection fill patterns spaced apartfrom the first touch electrode blocks and the second touch electrodeblocks.

Optionally, the respective one of the plurality of intersection fillpatterns is formed in a space surrounded by two first touch electrodeblocks respectively from two adjacent rows of the plurality of rows andtwo second touch electrode blocks respectively from two adjacent columnsof the plurality of columns.

Optionally, the two first touch electrode blocks respectively from thetwo adjacent rows are spaced apart from each other by the respective oneof the plurality of intersection fill patterns; and the two second touchelectrode blocks respectively from the two adjacent columns are spacedapart from each other by the respective one of the plurality ofintersection fill patterns.

Optionally, a first virtual center line of the two first touch electrodeblocks respectively from the two adjacent rows crosses over therespective one of the plurality of intersection fill patterns; and asecond virtual center line of the two second touch electrode blocksrespectively from the two adjacent columns of the plurality of columnscrosses over the respective one of the plurality of intersection fillpatterns.

Optionally, the plurality of bridge intersections and the plurality ofnon-bridge intersections are arranged in interlaced matrices.

In some embodiments, the respective one of the plurality of intersectionfill patterns is formed in a space surrounded by a first portion, asecond portion, a third portion, and a fourth portion. Optionally, thefirst portion and the second portion are respectively from the firsttouch electrode blocks respectively from two adjacent rows of theplurality of rows. Optionally, the third portion and the fourth portionare respectively from the two second touch electrode blocks respectivelyfrom two adjacent columns of the plurality of columns. Optionally, thefirst portion is respectively spaced apart from the second portion, thethird portion, and the fourth portion by the respective one of theplurality of intersection fill patterns. Optionally, the second portionis respectively spaced apart from the first portion, the third portion,and the fourth portion by the respective one of the plurality ofintersection fill patterns. Optionally, the third portion isrespectively spaced apart from the first portion, the second portion,and the fourth portion by the respective one of the plurality ofintersection fill patterns. Optionally, the fourth portion isrespectively spaced apart from the first portion, the second portion,and the third portion by the respective one of the plurality ofintersection fill patterns

Optionally, each of the first portion, the second portion, the thirdportion, and the fourth portion includes a respective protrusiondirectly adjacent to the respective one of the plurality of intersectionfill patterns.

In some embodiments, forming a respective first block of the first touchelectrode blocks includes forming two first bridge protrusions along arow direction and two first non-bridge protrusions along a columndirection. Optionally, the two first bridge protrusions are respectivelyconnected to two adjacent first touch electrode blocks respectivelythrough two adjacent bridge intersections of the plurality of bridgeintersections along the row direction. Optionally, the two firstnon-bridge protrusions are respectively directly adjacent to twoadjacent fill patterns of the plurality of intersection fill patternsrespectively at two adjacent non-bridge intersections of the pluralityof non-bridge intersections along the column direction.

Optionally, the two first non-bridge protrusions are substantiallyintact compared with the two first bridge protrusions.

Optionally, the two first non-bridge protrusions are at least partiallytruncated compared with the two first bridge protrusions.

Optionally, each of the two first bridge protrusions has a first numberof branches; each of the two first non-bridge protrusions has a secondnumber of branches; and the first number of branches equals to thesecond number of branches.

Optionally, each of the two first non-bridge protrusions includes twobranches; a first respective one of the plurality of intersection fillpatterns is directly adjacent to two branches of a first respective oneof the two first non-bridge protrusions; and a second respective one ofthe plurality of intersection fill patterns is directly adjacent to twobranches of a second respective one of the two first non-bridgeprotrusions.

In some embodiments, forming a respective second block of the secondtouch electrode blocks includes forming two second bridge protrusionsalong a column direction and two second non-bridge protrusions along arow direction. Optionally, the two second bridge protrusions arerespectively connected to two adjacent second touch electrode blocksrespectively through two adjacent bridge intersections of the pluralityof bridge intersections along the column direction. Optionally, the twosecond non-bridge protrusions are respectively directly adjacent to twoadjacent fill patterns of the plurality of intersection fill patternsrespectively at two adjacent non-bridge intersections of the pluralityof non-bridge intersections along the row direction.

Optionally, the two second non-bridge protrusions are substantiallyintact compared with the two second bridge protrusions.

Optionally, the two second non-bridge protrusions are at least partiallytruncated compared with the two second bridge protrusions.

Optionally, each of the two second bridge protrusions has a third numberof branches; each of the two second non-bridge protrusions has a fourthnumber of branches; and the third number of branches equals to thefourth number of branches.

Optionally, each of the two second non-bridge protrusions includes twobranches; a third respective one of the plurality of intersection fillpatterns is directly adjacent to two branches of a third respective oneof the two second non-bridge protrusions; and a fourth respective one ofthe plurality of intersection fill patterns is directly adjacent to twobranches of a fourth respective one of the two second non-bridgeprotrusions.

Optionally, a ratio between a first total surface area of the pluralityof intersection fill patterns and a second total combined surface areaof the first touch electrode blocks, the second touch electrode blocks,and the plurality of intersection fill patterns is greater than zero andno more than 1%.

The foregoing description of the embodiments of the invention has beenpresented for purposes of illustration and description. It is notintended to be exhaustive or to limit the invention to the precise formor to exemplary embodiments disclosed. Accordingly, the foregoingdescription should be regarded as illustrative rather than restrictive.Obviously, many modifications and variations will be apparent topractitioners skilled in this art. The embodiments are chosen anddescribed in order to explain the principles of the invention and itsbest mode practical application, thereby to enable persons skilled inthe art to understand the invention for various embodiments and withvarious modifications as are suited to the particular use orimplementation contemplated. It is intended that the scope of theinvention be defined by the claims appended hereto and their equivalentsin which all terms are meant in their broadest reasonable sense unlessotherwise indicated. Therefore, the term “the invention”, “the presentinvention” or the like does not necessarily limit the claim scope to aspecific embodiment, and the reference to exemplary embodiments of theinvention does not imply a limitation on the invention, and no suchlimitation is to be inferred. The invention is limited only by thespirit and scope of the appended claims. Moreover, these claims mayrefer to use “first”, “second”, etc. following with noun or element.Such terms should be understood as a nomenclature and should not beconstrued as giving the limitation on the number of the elementsmodified by such nomenclature unless specific number has been given. Anyadvantages and benefits described may not apply to all embodiments ofthe invention. It should be appreciated that variations may be made inthe embodiments described by persons skilled in the art withoutdeparting from the scope of the present invention as defined by thefollowing claims. Moreover, no element and component in the presentdisclosure is intended to be dedicated to the public regardless ofwhether the element or component is explicitly recited in the followingclaims.

What is claimed is:
 1. A touch control structure, comprising a pluralityof first touch electrodes arranged in a plurality of rows and aplurality of second touch electrodes arranged in a plurality of columns;first touch electrode blocks of the plurality of rows and second touchelectrode blocks of the plurality of columns are respectively arrangedin interlaced matrices, forming a plurality of bridge intersections anda plurality of non-bridge intersections; the touch control structure ata respective one of the plurality of bridge intersections comprises arespective one of a plurality of first bridges connecting two adjacentfirst touch electrode blocks in a respective row and a respective one ofa plurality of second bridges connecting two adjacent second touchelectrode blocks in a respective column; and the touch control structureat a respective one of the plurality of non-bridge intersectionscomprises a respective one of a plurality of intersection fill patternsspaced apart from the first touch electrode blocks and the second touchelectrode blocks; wherein the respective one of the plurality ofintersection fill patterns is in a space surrounded by a first portion,a second portion, a third portion, and a fourth portion; the firstportion and the second portion are respectively from the first touchelectrode blocks respectively from two adjacent rows of the plurality ofrows; the third portion and the fourth portion are respectively from thetwo second touch electrode blocks respectively from two adjacent columnsof the plurality of columns; an entirety of a periphery of therespective one of the plurality of intersection fill patterns issurrounded by respective portions of a first side of the first portion,a second side of the second portion, a third side of the third portion,and a fourth side of a fourth portion; and the first touch electrodeblocks, the second touch electrode blocks, and the plurality ofintersection fill patterns are in a same layer and made of a samematerial.
 2. The touch control structure of claim 1, wherein therespective one of the plurality of intersection fill patterns is in aspace surrounded by two first touch electrode blocks respectively fromtwo adjacent rows of the plurality of rows and two second touchelectrode blocks respectively from two adjacent columns of the pluralityof columns.
 3. The touch control structure of claim 2, wherein the twofirst touch electrode blocks respectively from the two adjacent rows arespaced apart from each other by the respective one of the plurality ofintersection fill patterns; and the two second touch electrode blocksrespectively from the two adjacent columns are spaced apart from eachother by the respective one of the plurality of intersection fillpatterns.
 4. The touch control structure of claim 2, wherein a firstvirtual center line of the two first touch electrode blocks respectivelyfrom the two adjacent rows crosses over the respective one of theplurality of intersection fill patterns; and a second virtual centerline of the two second touch electrode blocks respectively from the twoadjacent columns of the plurality of columns crosses over the respectiveone of the plurality of intersection fill patterns.
 5. The touch controlstructure of claim 1, wherein the first portion is respectively spacedapart from the second portion, the third portion, and the fourth portionby the respective one of the plurality of intersection fill patterns;the second portion is respectively spaced apart from the first portion,the third portion, and the fourth portion by the respective one of theplurality of intersection fill patterns; the third portion isrespectively spaced apart from the first portion, the second portion,and the fourth portion by the respective one of the plurality ofintersection fill patterns; and the fourth portion is respectivelyspaced apart from the first portion, the second portion, and the thirdportion by the respective one of the plurality of intersection fillpatterns.
 6. The touch control structure of claim 1, wherein the firstside and the second side are substantially parallel to each other; andthe third side and the fourth side are substantially parallel to eachother.
 7. The touch control structure of claim 1, wherein electrodeblocks of the plurality of first touch electrodes and the plurality ofsecond touch electrodes are respectively mesh electrode blocks; theplurality of intersection fill patterns are mesh patterns; a respectivefirst electrode block and a respective second electrode block adjacentto each other are insulated from each other by line breaks in mesh linesof the mesh electrode blocks; the first side, the second side, the thirdside, and the fourth side, are respectively formed by virtuallyconnected line breaks respectively of the first portion, the secondportion, the third portion, and the fourth portion; the periphery of therespective one of the plurality of intersection fill patterns isinsulated from the first portion, the second portion, the third portion,and the fourth portion by line breaks in the mesh lines of the meshpatterns; and the periphery of the respective one of the plurality ofintersection fill patterns is formed by the line breaks in the meshlines of the mesh patterns.
 8. The touch control structure of claim 1,wherein each of the first portion, the second portion, the thirdportion, and the fourth portion comprises a respective protrusionadjacent to the respective one of the plurality of intersection fillpatterns; wherein the respective protrusion comprises a first branch anda second branch; the first branch extends along a first direction; thesecond branch extends along a second direction; and the first directionand the second direction are substantially perpendicular to each other.9. The touch control structure of claim 1, wherein a respective secondblock of the second touch electrode blocks comprises two second bridgeprotrusions along a column direction and two second non-bridgeprotrusions along a row direction; the two second bridge protrusions arerespectively connected to two adjacent second touch electrode blocksrespectively through two adjacent bridge intersections of the pluralityof bridge intersections along the column direction; and the two secondnon-bridge protrusions are respectively directly adjacent to twoadjacent fill patterns of the plurality of intersection fill patternsrespectively at two adjacent non-bridge intersections of the pluralityof non-bridge intersections along the row direction.
 10. The touchcontrol structure of claim 1, wherein a ratio between a first totalsurface area of the plurality of intersection fill patterns and a secondtotal combined surface area of the first touch electrode blocks, thesecond touch electrode blocks, and the plurality of intersection fillpatterns is greater than zero and no more than 1%.
 11. The touch controlstructure of claim 1, further comprising a plurality of touch electrodebridges and an insulating layer between the plurality of touch electrodebridges, and the electrode blocks of the plurality of first touchelectrodes and the plurality of second touch electrodes; wherein theplurality of touch electrode bridges respectively extend through vias inthe insulating layer to respectively connect adjacent second electrodeblocks in a respective column of the plurality of columns of theplurality of second touch electrodes.
 12. The touch control structure ofclaim 1, further comprising a plurality of internal fill patternsrespectively surrounded by electrode blocks of the plurality of secondtouch electrodes; wherein the plurality of internal fill patterns areabsent in the plurality of first touch electrodes.
 13. A displayapparatus, comprising a display panel, and an integrated circuitconnected to the display panel; wherein the display panel comprises thetouch control structure of claim 1, and a plurality of display elements.